PHP_CodeSniffer_CLI::validateStandard PHP Method

    public function validateStandard($standards)
    {
        if ($standards === null) {
            // They did not supply a standard to use.
            // Look for a default ruleset in the current directory or higher.
            $currentDir = getcwd();
            do {
                $default = $currentDir . DIRECTORY_SEPARATOR . 'phpcs.xml';
                if (is_file($default) === true) {
                    return array($default);
                }
                $default = $currentDir . DIRECTORY_SEPARATOR . 'phpcs.xml.dist';
                if (is_file($default) === true) {
                    return array($default);
                }
                $lastDir = $currentDir;
                $currentDir = dirname($currentDir);
            } while ($currentDir !== '.' && $currentDir !== $lastDir);
            // Try to get the default from the config system.
            $standard = PHP_CodeSniffer::getConfigData('default_standard');
            if ($standard === null) {
                // Product default standard.
                $standard = 'PEAR';
            }
            return explode(',', $standard);
        }
        //end if
        $cleaned = array();
        $standards = (array) $standards;
        // Check if the standard name is valid, or if the case is invalid.
        $installedStandards = PHP_CodeSniffer::getInstalledStandards();
        foreach ($standards as $standard) {
            foreach ($installedStandards as $validStandard) {
                if (strtolower($standard) === strtolower($validStandard)) {
                    $standard = $validStandard;
                    break;
                }
            }
            $cleaned[] = $standard;
        }
        return $cleaned;
    }